In the 1980s, the turbocharger was the ideal tool to not only help cars to perform better, but also to give them a sportier look. This also applies to the idiosyncratic Citroën CX, which did not even have to leave its comfort zone. It became the superlative of the CX 25 GTi.
With a repertoire that ranges from effortlessly smoothing over speed bumps to tirelessly absorbing endless highways, the Citroën CX is the last car to associate with the concept of sportiness. It is the car for relaxed travelers and not for worked up pilots who will not tolerate anyone in the left lane. Although Citroën had already taken the lead by building the 201 km/h fast, 137 hp CX 25 GTi, it also stepped into the adventure called turbo in mid-1984. This was also the only possibility for the brand to elicit even more speed from the CX.
Like Saab, Citroën had no engines with more than four cylinders, while the competition always had five or six pots on the fire. The old pushrod engine had already been stretched to exactly 2,500 cc for the GTi and that value remained with the turbo version; the compression ratio went down. To cope with the higher working pressure, the engine block and pistons were strengthened and the exhaust valves were given sodium cooling. For example, the turbo pressure could rise to 0.7 bar, increasing the torque from 207 Nm in the GTi to 290 Nm in the Turbo. The power increased to 169 hp. Furthermore, the car conveniently spun yarn with its large cylinder capacity; each piston handled 625 cc of mixture and those big rams already gave the CX GTi a wonderfully creamy character. The block was so strong at the bottom that it completely covered the damned turbo hole. In addition, the four-cylinder ran beautifully quietly as usual, so that you never longed for the smoother running of a six-cylinder in the fastest CX. Good job. The suspension was tuned a little tighter to prevent leaning at very high speeds, something that did not even affect the unique spring characteristic. The actual spectacle of the Turbo, however, was in something else. No, not even the ridiculous rear spoiler with its two windows, but in a set of instruments without spinning dozens behind yellow magnifying glasses, but with a handful of ordinary, round meters!
– Thanks for information from Autoweek.nl